<?php
$a=array("A","Cat","Dog","A","Dog");
$b=array("A","A","Cat","A","Tiger");
$c=array_combine($a,$b);
print_r(array_count_values($c));
?>

<?php
$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");
$a2 = array("e" => "red", "f" => "green", "g" => "blue", "h" => "orange");
$a3 = array("i" => "orange");
$a4 = array_combine($a2, $a3);
$result = array_diff($a4, $a2);
print_r($result);
?>

<?php
$state = array ("Karnataka", "Goa", "Tamil Nadu", "Andhra Pradesh");
echo (array_search ("Tamil Nadu", $state) );
?>

<?php
$a1 = array("red", "green");
$a2 = array("blue", "yellow");
$a3 = array_merge($a1, $a2);
$a4 = array("a", "b", "c", "d");
$a = array_combine($a4, $a3);
print_r($a);
?>

<?php
$fruits = array ("apple", "orange", "banana");
echo (next($fruits));	
echo (next($fruits));
?>

<?php
$fruits = array ("apple", "orange", array ("pear", "mango"), "banana");
echo (count($fruits, 1));
?>